Sailing droplets in superheated granular layer

Sailing droplets in superheated granular layer

We report instability of a superheated granular layer when a droplet is deposited on top of the layer. We find that the instability caused by evaporating vapor may trap or cause the droplet to sail away from the deposited position. The sailing motion is triggered by an unstable pressure distribution...

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Bibliographic Details
Main Authors: Liu, Dongdong, Nguyen, Thien-Binh, Nguyen, Ngoc-Vu, Tran, Tuan
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2021
Subjects:
Science::Physics
Fluidized Beds
Granular Flows
Online Access:https://hdl.handle.net/10356/145779
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Institution: Nanyang Technological University
Language: English
Description
Summary:We report instability of a superheated granular layer when a droplet is deposited on top of the layer. We find that the instability caused by evaporating vapor may trap or cause the droplet to sail away from the deposited position. The sailing motion is triggered by an unstable pressure distribution originated from fast fluidization of metallic grains. We provide a predictive model and experimental verification of the enabling conditions for sailing motion based on limiting criteria for fast fluidization.

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